Surface Activity of Complex in Mixed Surfactant Solution

Tajima, Kazuo; Nakamura, Akio; Tsutsui, Takao

doi:10.1246/bcsj.52.2060

Cited by 27 publications

(20 citation statements)

References 21 publications

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“…From the experimental surface tension of mixed SDS and DDAO at high pH, b a 0 ds is -6.61, which is comparable to -7 as reported by Goloub et al [35]. The values of b for SDS and other zwitterionic surfactants have varied from -2 to -14 [32,35,36]. This could be due to the specific interaction between head groups of SDS and zwitterionic surfactants.…”

Section: Critical Micelle Concentration and Interaction Parametersupporting

confidence: 75%

Interaction Between an Anionic and an Amphoteric Surfactant. Part I: Monomer–Micelle Equilibrium

Soontravanich

Munoz

Harwell

et al. 2008

J Surfact & Detergents

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A mixture of anionic and amphoteric surfactants is composed of three components at intermediate pH levels: anionic, cationic (protonated amphoteric), and zwitterionic (unprotonated amphoteric). Knowledge of the composition of each surfactant in both monomer and micellar forms (monomer-micelle equilibrium) is important in applications using this mixture. Hydrogen ion titration of the mixed surfactant solution as a function of surfactant composition is combined with the pseudophase separation model and regular solution theory for the three-surfactant mixture to calculate the concentration of each surfactant in monomer and in micelle forms at different pH levels. The specific systems studied here contain sodium dodecyl sulfate (SDS) and dimethyldodecylamine oxide (DDAO), which are used in a wide range of consumer products. The degree of protonation of monomeric DDAO is not affected by the presence of SDS, indicating an insignificant formation of ion pairs between these monomers. However, the presence of SDS in micelles shifts the micellar pK a of DDAO protonation significantly and the method used here allows the quantification of partial fugacities of each individual surfactant in micelle form. The composition in the monomer phase at each pH will aid in understanding and predicting solution compositions corresponding to anionic/amphoteric surfactant precipitation boundaries, which is the focus of the subsequent paper in this series.

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Section: Critical Micelle Concentration and Interaction Parametersupporting

confidence: 75%

Interaction Between an Anionic and an Amphoteric Surfactant. Part I: Monomer–Micelle Equilibrium

Soontravanich

Munoz

Harwell

et al. 2008

J Surfact & Detergents

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“…The deviation is pronounced, especially in the case of mixture of amphoteric and anionic surfactants [7,8]. The deviation is pronounced, especially in the case of mixture of amphoteric and anionic surfactants [7,8].…”

Section: Introductionmentioning

confidence: 97%

Interactions of mixed surfactant solution with liposome membrane

Tanaka

Takeda

Nakamura

et al. 1989

Colloid & Polymer Sci

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Interactions of the mixed surfactant solution of dodecylamido propyl dimethyl aminoacetate and sodium dodecyl sulfate with the liposomal membrane were studied. Lytic activities of the surfactants were measured as a function of the concentrations ofsurfactant and phospholipid and the composition of mixed surfactants. The solubilization limits of phospholipid by surfactants were determined from the change of their aggregation behavior in suspensions at equilibrium by means of quasi-elastic light scattering. The mixed surfactant solutions showed lowe r lytic activity than single component surfactant solution in spite of the strong adsorption onto the liposome surface. This was attributed to low solubilization power of binary mixture for phospholipid.

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“…A number of solution properties for mixed surfactant systems have been studied [1][2][3][4][5][6][7][8][9]. For example, Funasaki et al [9] and Ingram [10] studied the mixed surfactant systems by measuring surface tension, Nishikido [11] by solubilization, Tokiwa et al [12] and Bansal et al [13] by nuclear magnetic resonance (NMR).…”

Section: Introductionmentioning

confidence: 99%

Solution properties of mixed surfactant systems (IV)

Abe

Tsubaki

Oginö

1984

Colloid & Polymer Sci

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Electric properties of mixed anionic-nonionic surfactant systems in aqueous solutions above the CMC have been studied in terms of pNa values, electrical conductivities, and dielectric constants; these systems are sodium 3, 6, 9-trioxaicosanoate (ECL)alkyl polyoxyethylene ethers (CmPOE; m---12,14,16, and 18). The degree of ionic dissociation of mixed micelle increases with increasing the number of carbon atoms of the alkyl group in the nonionic surfactant. The electrical conductivity increases with increasing the alkyl chain length in the nonionic surfactant, in spite of the increase of the activation energy for conduction. The size of mixed micelles also increases with increasing alkyl chain length. This may be attributed to the fact that the mixed micelle is formed more easi]y by a nonionic surfactant including long alkyl chains than for one having shorter alkyl chains.

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Surface Activity of Complex in Mixed Surfactant Solution

Cited by 27 publications

References 21 publications

Interaction Between an Anionic and an Amphoteric Surfactant. Part I: Monomer–Micelle Equilibrium

Interaction Between an Anionic and an Amphoteric Surfactant. Part I: Monomer–Micelle Equilibrium

Interactions of mixed surfactant solution with liposome membrane

Solution properties of mixed surfactant systems (IV)

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